|Team|Outgoing manager|Manner of departure|Date of vacancy|Replaced by|Date of appointment|Position in table|
|---|---|---|---|---|---|---|
|Crystal Palace|Peter Taylor|Contract terminated|8 October 2007|Neil Warnock|11 October 2007|19th|
|Leicester City|Martin Allen|Mutual consent|29 August 2007|Gary Megson|13 September 2007|9th|
|Queens Park Rangers|John Gregory|Contract terminated|1 October 2007|Luigi De Canio|29 October 2007|24th|
|Norwich City|Peter Grant|Mutual consent|8 October 2007|Glenn Roeder|30 October 2007|22nd|
|Leicester City|Gary Megson|Mutual consent (hired by Bolton Wanderers)|24 October 2007|Ian Holloway|22 November 2007|19th|
|Burnley|Steve Cotterill|Mutual consent|8 November 2007|Owen Coyle|22 November 2007|15th|
|Preston North End|Paul Simpson|Contract terminated|13 November 2007|Alan Irvine|20 November 2007|21st|
|Plymouth Argyle|Ian Holloway|Resigned (hired by Leicester City)|21 November 2007|Paul Sturrock|27 November 2007|7th|
|Coventry City|Iain Dowie|Contract terminated|11 February 2008|Chris Coleman|19 February 2008|19th|
|Sheffield United|Bryan Robson|Mutual consent|14 February 2008|Kevin Blackwell|14 February 2008|16th|
|Queens Park Rangers|Luigi De Canio|Mutual consent|8 May 2008|Iain Dowie|14 May 2008|14th|

Question: what are the number of times the date of vacancy was in october?
Answer: 4